document.write( "Question 1023374: Write an equation for the line that is perpendicular to the given line that passes through the given point.
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\n" ); document.write( "(1,1);y=-1/4x+7
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Algebra.Com's Answer #638859 by fractalier(6550)\"\" \"About 
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If the line you want is perpendicular to that line, you need one with a slope that is the negative reciprocal of -1/4, or 4.
\n" ); document.write( "Then we use y = mx + b and plug in, giving us
\n" ); document.write( "1 = 4(1) + b
\n" ); document.write( "1 = 4 + b
\n" ); document.write( "b = -3
\n" ); document.write( "and the line we want is
\n" ); document.write( "y = 4x - 3
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